Finding the Fourth Proportional to 21,975.84, 30,328.83 and 12,545.82

Step by Step Solution

1. Step 1: Write the proportion equation
   21,975.84 : 30,328.83 = 12,545.82 : x
2. Step 2: Convert to fraction form
   21,975.84/30,328.83 = 12,545.82/x
3. Step 3: Cross multiply
   21,975.84x = 30,328.83 × 12,545.82
4. Step 4: Simplify right side
   21,975.84x = 380,500,041.99
5. Step 5: Solve for x
   x = 380,500,041.99/21,975.84
6. Step 6: Final answer
   x = 17,314.47